From: John Hodge <tpg@mutabah.net>
Date: Fri, 26 Apr 2013 05:22:46 +0000 (+0800)
Subject: Usermode/libc - Fixed back-seek of -1 when a write error occurs in buffering
X-Git-Tag: rel0.15~517
X-Git-Url: https://git.ucc.asn.au/?a=commitdiff_plain;h=4cec3cb45e1a5343c8791fb6bdd1d2b896d3f500;p=tpg%2Facess2.git

Usermode/libc - Fixed back-seek of -1 when a write error occurs in buffering
---

diff --git a/Usermode/Libraries/libc.so_src/stdio.c b/Usermode/Libraries/libc.so_src/stdio.c
index 8f7ede00..d03231c3 100644
--- a/Usermode/Libraries/libc.so_src/stdio.c
+++ b/Usermode/Libraries/libc.so_src/stdio.c
@@ -389,6 +389,11 @@ size_t _fwrite_unbuffered(FILE *fp, size_t size, size_t num, const void *data)
 	while( num -- )
 	{
 		bytes = _SysWrite(fp->FD, data, size);
+		if( bytes == (size_t)-1 ) {
+			// Oops.
+			// TODO: Set error flag
+			break;
+		}
 		if( bytes != size ) {
 			_SysDebug("_fwrite_unbuffered: Oops, rollback %i/%i bytes!", bytes, size);
 			_SysSeek(fp->FD, -bytes, SEEK_CUR);